Hatfield has worked since 1994 conducting research on dioxin contamination from Agent Orange. Their work has led to the identification of dioxin hotspots throughout southern Vietnam, the development of mitigation plans to address these hotspots and to prevent further exposure of local populations to dioxin from Agent Orange.

GENETIC DAMAGE IN NEW ZEALAND VIETNAM WAR VETERANS: Massey University Study that found that Vietnam veterans exposed to Agent Orange had a significant levels of chromosomal damage compared to unexposed veterans.